Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Design of Coupling Bolt for Shaft in Power Plant

발전용 축계 결합용 커플링 볼트 설계에 관한 연구

  • Jeong, HoSeung (Rolls-Royce and Pusan Nat'l. Univ. Technology Center) ;
  • Son, ChangWoo (Dept. of Mechanical Engineering, Korea Maritime Univ.) ;
  • Cho, JongRae (School of Mechanical and Energy System Engineering, Korea Maritime Univ.) ;
  • Kim, Tae Hyung (Hwashinbolt Ind. Co, LTD.)
  • 정호승 (부산대학교 Rolls-Royce 대학기술센터) ;
  • 손창우 (한국해양대학교 기계공학과) ;
  • 조종래 (한국해양대학교 기계.에너지시스템공학부) ;
  • 김태형 ((주)화신볼트산업)
  • Received : 2012.11.12
  • Accepted : 2013.01.30
  • Published : 2013.05.01
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Abstract

Coupling bolts have replaced conventional fitted bolts in applications where the operator's safety during assembly/disassembly is of concern or where the cost of process interruption is significant. Coupling bolts have been installed on rotating flange couplings in a wide range of marine and power applications worldwide. Their use has been approved by all leading international and national classification societies and regulatory bodies. A coupling bolt is a hydraulically tensioned fitted bolt that creates a stable and rigid link between coupling flanges and simplifies assembly and disassembly. We measure the bolt dimensions for reverse engineering and study the standard of assembly-load using a mechanical formula in order to localize a coupling bolt for a shaft in a power plant. We experimentally obtain the friction coefficient and confirm the condition of bolt sets through structure analysis. We show the variation of contact pressure for the shape parameter in order to consider the result when redesigning a bolt.

커플링 볼트는 조립, 분해 시 작업자의 안전이 고려되는 부분이나 공정 중단의 비용이 중요한 부분에서 기존의 일반볼트를 대체한다. 해양과 발전분야에서 세계적으로 광범위하게 적용되어, 회전하는 플랜지 결합에 사용되어 왔고, 국제적인 국가 선급 협회나 규제기관의 사용을 승인받아 왔었다. 커플링 볼트는 유압식으로 인장되어 플랜지 사이를 안정적으로 단단히 결합한다. 본 논문에서는 발전소 커플링 볼트의 국산화를 위해, 역설계를 통해 현재 사용 중인 볼트의 치수를 측정, 역학적인 수식을 통해 권장 체결하중의 기준을 살펴보았다. 마찰계수는 실험을 통해 선정하였고, 구조해석을 통해 체결상태를 확인하였다. 형상변수에 따른 접촉압력의 변화를 볼트 재설계시 참고할 수 있도록 나타내었다.

Keywords

References

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